P066B 2014 Chevrolet Silverado Code - Cylinder 1 Glow Plug Control Circuit High Voltage
Quick Answer
The diagnostic trouble code P066B for a 2014 Chevrolet Silverado specifically refers to an issue with the Cylinder 1 Glow Plug Control Circuit registering high voltage. Common causes include Faulty glow plug in Cylinder 1, Wiring or connection issues in the glow plug control circuit, Defective glow plug control module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P066B 2014 Chevrolet Silverado indicates Cylinder 1 Glow Plug Control Circuit High Voltage.
- Common causes
- Common causes include Faulty glow plug in Cylinder 1, Wiring or connection issues in the glow plug control circuit, Defective glow plug control module.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P066B 2014 Chevrolet Silverado Description
The diagnostic trouble code P066B for a 2014 Chevrolet Silverado specifically refers to an issue with the Cylinder 1 Glow Plug Control Circuit registering high voltage. Glow plugs are essential components in diesel engines, helping to heat the combustion chamber for easier cold starts. When the control circuit for the glow plug in Cylinder 1 is experiencing high voltage, it indicates a malfunction in the system that could lead to difficulties in starting the engine, decreased fuel efficiency, and potential damage to the engine over time.
Common Causes of P066B 2014 Chevrolet Silverado
- Faulty glow plug in Cylinder 1
- Wiring or connection issues in the glow plug control circuit
- Defective glow plug control module
- Corrosion or damage to the electrical components
- Engine control module (ECM) malfunction
Symptoms of P066B 2014 Chevrolet Silverado
- Hard starting or extended cranking time
- Rough idling or misfiring
- Decreased fuel efficiency
- Illumination of the check engine light
- Engine performance issues, especially in cold weather
How to Fix P066B 2014 Chevrolet Silverado
- Begin by conducting a thorough inspection of the glow plug in Cylinder 1, checking for any signs of damage or wear.
- Test the wiring and connections in the glow plug control circuit to identify any loose connections or shorts.
- If the glow plug is faulty, replace it with a new, compatible part.
- Inspect the glow plug control module and replace if necessary.
- Clear the diagnostic trouble codes from the ECM and perform a test drive to ensure the issue has been resolved.
Cost to Fix P066B 2014 Chevrolet Silverado
The cost of repairing the Cylinder 1 Glow Plug Control Circuit high voltage issue can vary depending on the specific components that need to be replaced and the labor rates in your area. On average, you can expect to pay anywhere from $150 to $300 for parts and labor. Keep in mind that additional diagnostic time may be needed to pinpoint the exact cause of the problem, and labor rates can fluctuate based on location and the expertise of the mechanic. It's recommended to get a few quotes from different auto repair shops to find the best price for the repair.
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